So far I have never ask a person or entity for their SSN or Tax ID, only their drivers license # and all vehicles' license plate #s  *unless* IRS indicates I must in writing.

Because of that, I'd probably even accept a CAN drivers license and proof of income (ie, CAN rent roll if you plan to live off that til u work in USA).

Reminds me of the "good driver" and "multi-policy" discounts given by the insurance companies.The difficulty I see is how well the screening tools you use will give you a definitive answer about the applicant's background and status.

Establish a residence, register to vote, obtain a driver's license (and make sure to surrender your CA driver's license), etc.  

Oh, Ronald, You are in the driver's seat in your area.  

That could not be farther from the truth and it normally leads to financial disaster.It's like buying a car without bothering to get a drivers licence and expectation to have a chauffeur.

Create a sign in sheet so those who show up can leave their contact information with you; you can create a box beside it for them to check off if they take an application to fill out and return later or if they already filled it out on line, have them bring it with a copy of their driver's license and proof of income (two months).

For the others I have my daily driver, a 2016 Civic. 

Copy of their passportCopy of F1 visaCopy of I20 issued by their school (this usually shows school, major, their sponsor, etc.)Copy of drivers license if they have one.

I just had to send a copy of my driver's license to the child support division so they could show it to the father, who verified I was not her.But, yes, weird stuff can show up during title searches.